use IGNORE_EINTR w/close

HANDLE_EINTR is both not safe and not useful on Linux systems.
Switch to IGNORE_EINTR like Chromium has done everywhere.

See http://crbug.com/269623 for details.

BUG=chromium:373154
TEST=`cbuildbot {arm,amd64,x86}-generic-full` passes

Change-Id: Iaf55cde898a2b7eb699053974f6b3f41432e4f10
Reviewed-on: https://chromium-review.googlesource.com/199852
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>

file_io.cc

diff --git a/file_io.cc b/file_io.cc
index 5bab442..833a444 100644
--- a/file_io.cc
+++ b/file_io.cc
@@ -36,7 +36,7 @@
 }
 
 int FileIO::Close(int fd) {
-  return HANDLE_EINTR(close(fd));
+  return IGNORE_EINTR(close(fd));
 }
 
 int FileIO::SetFdNonBlocking(int fd) {

sockets.cc

diff --git a/sockets.cc b/sockets.cc
index bb7ddae..39c159e 100644
--- a/sockets.cc
+++ b/sockets.cc
@@ -54,7 +54,7 @@
 }
 
 int Sockets::Close(int fd) const {
-  return HANDLE_EINTR(close(fd));
+  return IGNORE_EINTR(close(fd));
 }
 
 int Sockets::Connect(int sockfd,